Developing filter stick and cigarette

Abstract

The utility model discloses a developing filter stick which comprises a filter element (1) and packaging paper (2) wrapping the filter element, the filter element (1) comprises a first core material (11) and a second core material (12), and the draw resistance of the first core material (11) is larger than that of the second core material (12); the first core material (11) and the second core material (12) are arranged in the axial direction and extend to the end face, close to the lip end, of the filter stick. The utility model further provides a cigarette. According to the developing filter stick and the cigarette provided by the invention, more smoke flows through the second core material with lower draw resistance, so that the tar intercepted by the second core material is higher, the color of the second core material is different from that of the first core material at the near-mouth end of the filter stick due to the difference of the tar interception amount, a preset shape is formed, the developing of the filter stick is realized, and meanwhile, the effect of intercepting the tar can be achieved; it can be guaranteed that the interception effect of the filter stick on harmful substances in smoke meets the requirement.

Description

Technical Field

[0001] This application relates to the field of cigarette technology, and in particular to a developing filter rod and a cigarette. Background Technology

[0002] Filter rods are an important component of cigarettes, effectively trapping and filtering tar and other substances in the smoke, thus reducing tar and harm.

[0003] Existing filter rods are typically filled with cellulose acetate bundles. According to airflow dynamics, when flue gas passes through the filter rod, the airflow velocity and flow rate are high in the center, while the airflow velocity and flow rate are low in the periphery. Therefore, the flue gas mainly escapes from the middle of the filter rod, and after inhalation, the end of the filter rod turns yellowish-brown, especially the middle part, which affects the appearance.

[0004] In existing technologies, some methods cover up discoloration by making the cellulose acetate tows colored, but discoloration is difficult to avoid; others use hollow rods inside the filter rod to change the airflow path to avoid end-face discoloration, but the hollow part of the hollow rod has no filling material, so flue gas passes through more easily, resulting in low filtration efficiency for harmful substances in the flue gas; while if the adsorption efficiency of the filter rod is improved by shortening the length of the hollow section, it is still difficult to avoid end-face discoloration of the filter rod. Utility Model Content

[0005] To solve the above-mentioned technical problems, the first objective of this utility model is to provide a developing filter rod; the second objective of this utility model is to provide a cigarette; this application provides a developing filter rod and a cigarette, in which more smoke flows through the second core material with lower draw resistance, so that the second core material retains more tar. At the end of the filter rod near the mouthpiece, due to the difference in the amount of tar retained, a color difference appears between the filter rod and the first core material, forming a preset shape, thereby realizing the development of the filter rod. At the same time, both functions can retain tar, ensuring that the filter rod's retention effect on harmful substances in the smoke meets the requirements.

[0006] The technical solution provided by this utility model is as follows:

[0007] A developing filter rod includes a filter element and packaging paper wrapping the filter element. The filter element includes a first core material and a second core material, wherein the suction resistance of the first core material is greater than that of the second core material.

[0008] The first core material and the second core material are arranged axially and extend to the end face of the filter rod near the lip end, respectively.

[0009] Preferably, the absorption resistance difference between the first core material and the second core material is ≥60mmH2O.

[0010] Preferably, the first core material and the second core material form text and / or patterns on the end face of the filter rod near the lip end.

[0011] Preferably, the formed characters are any one or more of Chinese characters and letters;

[0012] The resulting pattern can be any one or more of the following: square, circle, oval, heart, star, yin-yang symbol, polygon, animal silhouette, and plant silhouette.

[0013] Preferably, the line width at the thinnest part of the formed text or pattern is ≥1mm.

[0014] Preferably, in each cross-section perpendicular to the filter rod axis, the first core material and the second core material both form the same text and / or pattern as the near-lip end face.

[0015] Preferably, the first core material and the second core material are white or colored; or,

[0016] The first core material is black, and the second core material is white or colored.

[0017] Preferably, the first core material and the second core material are made of cellulose acetate tow.

[0018] A cigarette includes a smoke-generating section and a filter rod, wherein the filter rod is a developing filter rod as described in any of the preceding claims.

[0019] To address the problems existing in the prior art, this application provides a developing filter rod, including a filter element and packaging paper wrapping the filter element. The filter element includes a first core material and a second core material, with the first core material having a greater draw resistance than the second core material. The first and second core materials are arranged axially and extend to the end face of the filter rod near the lip. Because the first and second core materials are arranged axially along the filter rod, and the first core material has a greater draw resistance than the second core material, the smoke entering the filter rod will flow more through the second core material with its lower draw resistance as it flows along the axial direction. This results in the second core material retaining more tar, causing a color difference between the second and first core materials near the mouthpiece due to the difference in tar retention. This creates a predetermined shape, transforming the discoloration of the filter rod from a negative influence that needs to be removed into a usable factor, achieving the development of the filter rod and providing consumers with a strong visual impact and a new smoking experience. Furthermore, although the first and second core materials differ only in draw resistance, both effectively retain tar, ensuring that the filter rod meets the required retention effect for harmful substances in the smoke.

[0020] This application also provides a cigarette, including a smoke-generating section and a filter rod, wherein the filter rod is a developing filter rod as described in any of the above claims, thereby achieving the effects of smoke filtration and predetermined shape display. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a developing filter rod in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of another structure of the developing filter rod in an embodiment of this utility model;

[0024] Figure 3 for Figure 2 Sectional view along axis AA;

[0025] Figure reference numerals: 1-Filter element; 11-First core material; 12-Second core material; 2-Packaging paper. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0030] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0031] As shown in the figure, this utility model embodiment provides a developing filter rod, including a filter element 1 and a packaging paper 2 wrapping the filter element. The filter element 1 includes a first core material 11 and a second core material 12. The suction resistance of the first core material 11 is greater than that of the second core material 12.

[0032] The first core material 11 and the second core material 12 are arranged axially and extend to the end face of the filter rod near the lip end, respectively.

[0033] To address the problems existing in the prior art, this application provides a developing filter rod, including a filter element 1 and packaging paper 2 wrapping the filter element. The filter element 1 includes a first core material 11 and a second core material 12, with the first core material 11 having a greater draw resistance than the second core material 12. The first core material 11 and the second core material 12 are arranged axially and extend to the end face of the filter rod near the lip. Because the first core material 11 and the second core material 12 are arranged axially along the filter rod, and the draw resistance of the first core material 11 is greater than that of the second core material 12, the smoke entering the filter rod will flow more through the second core material 12, which has a lower draw resistance, as it flows along the axial direction of the filter rod. This results in the second core material 12 retaining more tar, and due to the difference in tar retention, a color difference appears between the second core material 11 and the first core material 11 near the mouthpiece, forming a predetermined shape. This transforms the discoloration of the filter rod from an undesirable effect that needs to be removed into a usable factor, achieving the development of the filter rod and providing consumers with a strong visual impact and a new smoking experience. Furthermore, the first core material 11 and the second core material 12 differ only in their suction resistance, but both can effectively trap tar, ensuring that the filter rod meets the requirements for trapping harmful substances in the flue gas.

[0034] Preferably, the absorption resistance difference between the first core material 11 and the second core material 12 is ≥60 mmH2O.

[0035] Further optimization is made to ensure that the suction resistance difference between the first core material 11 and the second core material 12 is ≥60mmH2O. This difference in suction resistance can ensure that there is a large difference in the path of the flue gas flow, so that the color change is concentrated in the material with low suction resistance, resulting in a clear shape.

[0036] Preferably, the first core material 11 and the second core material 12 form text and / or patterns on the end face of the filter rod near the lip end.

[0037] Preferably, the formed characters are any one or more of Chinese characters and letters;

[0038] The resulting pattern can be any one or more of the following: square, circle, oval, heart, star, yin-yang symbol, polygon, animal silhouette, and plant silhouette.

[0039] The preset shapes formed by the first core material 11 and the second core material 12 on the end faces near the lip of the filter rod can be one or more combinations of text and shapes. Furthermore, the formed text can be any one or more combinations of Chinese characters and letters; the formed patterns can be any one or more of squares, circles, ovals, hearts, stars, tai chi shapes, polygons, animal silhouettes, and plant silhouettes. Through the combination of text and / or patterns, rich visual presentation effects can be achieved.

[0040] Preferably, the line width at the thinnest part of the formed text or pattern is ≥1mm.

[0041] The thinnest line of the text or pattern should ideally be ≥1mm to ensure sufficient core material for flue gas flow and adsorption of color, resulting in a clearer pattern presentation. If the text or pattern is formed by lines (i.e., without color blocks), the line thickness should ideally be between 1mm and 2mm.

[0042] Preferably, in each cross section perpendicular to the filter rod axis, the first core material 11 and the second core material 12 are formed with the same text and / or pattern as the near-lip end face.

[0043] The first core material 11 and the second core material 12 extend along the axial direction of the filter rod, and the flue gas also flows along the axial direction of the filter rod. From the distal lip end to the proximal lip end, at each cross section perpendicular to the axial direction, the distribution of the first core material 11 and the second core material 12 can be the same or different, as long as the materials form a preset shape on the end face near the lip end.

[0044] Further optimization involves forming text and / or patterns identical to those on the near-lip end face in each cross-section perpendicular to the filter rod axis of the first core material 11 and the second core material 12. That is, during preparation, the first core material 11 and the second core material 12 are respectively made into long strips with the target cross-section as needed, and then combined and wrapped with packaging paper 2 to form a filter rod. In this way, the smoke enters the second core material 12 with lower draw resistance, the entire flow path is smoother, the switching of smoke between materials with different draw resistance is reduced, and more tar and other substances are enriched in the second core material 12 with lower draw resistance.

[0045] Preferably, the first core material 11 and the second core material 12 are white or colored; or,

[0046] The first core material 11 is black, and the second core material 12 is white or colored.

[0047] The first core material 11 and the second core material 12 can be selected according to the traditional filter rod color scheme, either white or colored; alternatively, the first core material 11 can be black, and the second core material 12 can be white or colored. When black is not used, the colors of the first core material 11 and the second core material 12 can be the same or different. Furthermore, the colors of the materials within the first core material 11 and the second core material 12 can be the same or different, all of which will change color after adsorbing tar, combining with their original colors to present a predetermined shape effect. When black is selected, since the adsorbed color is indistinguishable in black, the first core material 11, which has high adsorption resistance, is selected as black, and the second core material 12 is selected as white or colored.

[0048] Preferably, the first core material 11 and the second core material 12 are made of cellulose acetate tow.

[0049] The preferred materials for the first core material 11 and the second core material 12 are cellulose acetate tows.

[0050] A cigarette includes a smoke-generating section and a filter rod, wherein the filter rod is a developing filter rod as described in any of the preceding claims.

[0051] This application also provides a cigarette, including a smoke-generating section and a filter rod, wherein the filter rod is a developing filter rod as described in any of the above claims, thereby achieving the effects of smoke filtration and predetermined shape display.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A developing filter rod, characterized in that, Includes a filter element (1) and a packaging paper (2) that wraps the filter element. The filter element (1) includes a first core material (11) and a second core material (12). The suction resistance of the first core material (11) is greater than that of the second core material (12). The first core material (11) and the second core material (12) are arranged axially and extend to the end face of the filter rod near the lip end, respectively.

2. The developing filter rod according to claim 1, characterized in that, The suction resistance difference between the first core material (11) and the second core material (12) is ≥60mmH2O.

3. The developing filter rod according to claim 1, characterized in that, The first core material (11) and the second core material (12) form text and / or patterns on the end face of the filter rod near the lip.

4. The developing filter rod according to claim 3, characterized in that, The resulting script can be any one or more of Chinese characters and alphabetic letters; The resulting pattern can be any one or more of the following: square, circle, oval, heart, star, yin-yang symbol, polygon, animal silhouette, and plant silhouette.

5. The developing filter rod according to claim 4, characterized in that, The line width at the thinnest part of the formed text or pattern is ≥1mm.

6. The developing filter rod according to any one of claims 3-5, characterized in that, In each section perpendicular to the filter rod axis, the first core material (11) and the second core material (12) are formed with the same text and / or pattern as the near-lip end face.

7. The developing filter rod according to claim 1, characterized in that, The first core material (11) and the second core material (12) are white or colored; or, The first core material (11) is black, and the second core material (12) is white or colored.

8. The developing filter rod according to claim 1, characterized in that, The first core material (11) and the second core material (12) are made of cellulose acetate tow.

9. A cigarette, comprising a smoke-generating section and a filter rod, characterized in that, The filter rod is the developing filter rod according to any one of claims 1-8.

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